diphenoxylate drug pathway diphenoxylate pharmacodynamics pathway 2016-03-28T09:13:43Z PW:0002572 SMP:00675 The pathway of diphenoxylate-target interaction and of the biochemical or physiological responses to drug. Diphenoxylate is used for the treatment of diarrhea. Genetic variations can cause differences in the response of the organism to the drug. pathway vpetri